How can tartar and plaque be removed from teeth without grinding? is there any paste, etc. for it?
The girders of a suspension bridge form an arc. The definition of an arc is a curve or bowed shape, like a part of a circle. An example of an arc is a rainbow. To arc is defined as to make a curved shape or move in a curved path.
The arc is more accurately defined on a plane, with the coordinates of its points being given as the continuous functions x = Ï(t) and y = Ï t of some parameter t, a â¤ t â¤ b. It is assumed that the different points correspond to the different values of t.